After migrating to 3.2.1 I experienced a problem with rich:comboBox positioned on a modalPanel. Neither the input suggestion while typing nor the input suggesting via mouse click does work. Exactly the same code works on 3.2.0 and 3.2.0SR1.

I moved the comboBox code snipped from the modalPanel to the page and it works like expected. So, I think the problem is caused through the combination of comboBox and modalPanel.

Maybe the following code will help you to reproduce the problem:

<rich:comboBox id="test"
 value="#{testBean.selectedValue}"
 width="450"
 converter="testValueConverter"
 suggestionValues="#{testBean.valueList}">

 <a4j:support event="onselect"
 action="#{testBean.applyValue}"
 reRender="id1,id2"/>
</rich:comboBox>